<template>
<!-- 头部区域 -->
  <el-container class="home-container">
      <el-header>
          <div>
              <img src="../assets/img/favicon.png" alt="">
              <span>电商后台管理系统</span>
          </div>
        <el-button type="info" @click="logout">退出登录</el-button>
      </el-header>
  <!-- 页面主体区域 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ?'64px' :'200px'">
        <!-- 侧边栏菜单 -->
        <div class="toggle-btn" @click="toggleCollapse">|||</div>
        <el-menu
      background-color="#4a4d62"
      text-color="#000"
      active-text-color="#ffd04b" :unique-opened="true" 
      :collapse="isCollapse" :collapse-transition="false" :router="true"
      :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id +'' " v-for="item in menuList" :key="item.id">
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>

        <!-- 二级菜单 -->
        <el-menu-item :index="'/' +subItem.path " v-for="subItem in item.children" :key="subItem.id"
        @click="saveNavState('/' + subItem.path)">
         
            <template slot="title">
                <!-- 图标 -->
            <i class="el-icon-menu"></i>
            <!-- 文本 -->
            <span>{{subItem.authName}}</span>
            </template>
        </el-menu-item>
    
      </el-submenu>
      
    </el-menu>
    </el-aside>
    <!-- 右边内容主体 -->
    <el-main>
      <router-view></router-view>
    </el-main>
  </el-container>

</el-container>
</template>

<script>
export default {
  data() {
    return {
      menuList:[],  //左侧菜单数据
      iconObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      isCollapse:false,
      // 激活的连接地址
      activePath:''
    };
  },
  created(){
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
    
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },

    // 获取菜单
    async getMenuList(){
      const { data:res} = await this.$http.get('menus')
      
      if(res.meta.status !==200 )return this.$message.error(res.meta.msg)
      this.menuList = res.data
      // console.log(res);
    },
    toggleCollapse(){
      // 点击按钮，实现折叠展开
      this.isCollapse = !this.isCollapse
    },
    // 保存链接激活
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
  },
};
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #4a4d62;
    display: flex;
    justify-content:space-between;
    padding-left: 0;
    align-items: center;
    color: white;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
        img{
        height: 60px;
        width: 60px;
        border-radius: 50%;
    }
      
    }
}

.el-aside{
    background-color: #4a4d62;
    .el-menu{
      border-right: none;
    }
}
.el-mian{
    background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-btn{
  background-color: rgb(156, 156, 156);
  font-size: 10px;
  line-height: 24px;
  color: #eaedf1;
  text-align: center;
  letter-spacing: 0.2em; 
  cursor: pointer;
  
}
</style>